1x02: The Heat
1x04: Signs of Life
1x01: The Cellar
1x05: The Rift
6x12: Hero
6x11: Afterlife
6x10: No Return
6x09: Hope and Glory
6x07: Sister Act
6x05: Cheers & Jeers
6x04: Life & Death
6x03: First Date
6x02: Soulmates
5x11: One Shot
5x10: The Kiss
